ملخص المقالة :
Interpolation, the generalization of point data to scatter data, and combining maps are three cases of important applications of GIS. In this study, it has been tried to make the estimation of rain erosion capacity (Fournier Method) more real through using GIS capability in interpolation and the generalization of point data to scatter data. In Fournier method, the rain erosion capacity is calculated through the use of two climatic parameters (annual precipitation and the rainfall mean in the rainiest month of year) and two physiological parameters (the height and slop of the region). The findings of this study indicated that there is significant difference between these two methods of calculating rain erosion capacity. Using the means of rain erosion potential was estimated to be almost 3.4 tones per square kilometers annually while this amount was estimated to be 4.5 tones per square kilometers annually by using GIS capabilities. [Amir Gandomkar, Estimating the Real Capacity of Rain Erosion Using GIS (The Fournier Case Study for Isfahan). International Journal of Agricultural Science, Research and Technology, 2011; 1(1):33-38].
المصادر:
1. Angulo-Martínez, M.Beguería, S. (2009). Estimating rainfall erosivity from daily precipitation records: A comparison among methods using data from the Ebro Basin (NE Spain), Journal of Hydrology, 379(1-2): 111-121.
2. Arghiuş, C. Arghiuş, V. (2011). The quantitative estimation of the soil erosion using usle type ROMSEM model. Case-study- the Codrului Ridge and Piedmont (Romania), Carpathian Journal of Earth and Environmental Sciences, 6(2): 59-66.
3. Bayramin, I., Erpul, G.Erdoǧan, H.E. (2006). Use of CORINE methodology to assess soil erosion risk in the semi-arid area of Beypazarι, Ankara, Turkish Journal of Agriculture and Forestry, 30(2): 81-100.
4. Chorley, R J., Schumm S A and Sugden D E. (1985). Geomorphology, Methuen & Co, P: 131 – 140.
5. Clifford, S. R. (2001). Minimal climatic control on erosion rates in the Sierra Nevada, California, Journal of Geology, 29: 447-450.
6. Cooke, R. U and Doornkamp, J. C. (1990). Geomorphology in environmental management, Oxford, Clarendon Press, P: 148 – 200.
7. Diodato, N and Bellocchi, G. (2007). Estimating monthly (R)USLE climate input in a
Mediterranean region using limited data, Journal of Hydrology, 345(3-4): 224-236
8. Fournier, M. F. (1960). Climate et erosion. Paris, Presses universities de France.
9. Gandomkar, A. (2000). Hydrogeomorphol-ogy of upstream Boshar River, Isfahan, P: 110 – 120.
10. Kiarsi, F. (2001). Hydrogeomorphology of mean stream Boshar River, Isfahan, P 115 – 130.
11. Milevski, I. (2011). Factors, forms, assessment and human impact on excess erosion and deposition in the upper Bregalnica watershed (Republic of Macedonia), Zeitschrift fur Geomorphologie, 55(1):77-94.
12. Munka, C.a., Cruz, G. A and Caffera, R. M. (2007). Long term variation in rainfall erosivity in Uruguay: A preliminary Fournier approach, GeoJournal, 70(4): 257-262.
13. Nearing, M. A., Pruski, F. F. b and O'Neal, M. R. (2004). Expected climate change impacts on soil erosion rates: A review, Journal of Soil and Water Conservation, 59(1): 43-50.
14. Ramesht, M. (1996). Using geomorphology in planning, Isfahan.
15. Rafahi, H. (1999). Soil erosion by water of conservation, Tehran, P 233 – 268.
16. Wolman, M. G and Fournier, F. G. A. (1987). Land transformation in agriculture, John Wiley and Sons.
